/**

This file is part of MaCI/GIMnet.

MaCI/GIMnet is free software: you can redistribute it and/or modify it 
under the terms of the GNU Lesser General Public License as published 
by the Free Software Foundation, either version 3 of the License, or 
(at your option) any later version.

MaCI/GIMnet is distributed in the hope that it will be useful, but WITHOUT 
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public 
License for more details.

You should have received a copy of the GNU Lesser General Public 
License along with GIMnet. (See COPYING.LESSER) If not, see 
<http://www.gnu.org/licenses/>.

**/
/**
 * \file 
 * \brief CCITT CRC16 implementation 
 * \author Antti Maula <antti.maula@tkk.fi>
 */
 
#ifndef _CRC16_H_
#define _CRC16_H_

#ifdef __cplusplus
extern "C" {
#endif
  
  
  /**
   * CCITT CRC16 implementation (As used by the AVANT command
   * protocol, but can be used for other purposes too.
   * 
   * @param[in] buf             Pointer to beginning of the data
   * @param[in] len             Length of data to calculate 
   *                            the CRC16 for.
   * @return                    Calculated crc16 value.
   *
   */
  unsigned short crc16(const char *buf, int len);
  
  
#ifdef __cplusplus
}
#endif

#endif //_CRC16_H_
